From August 1st 2012: "The tariff for a small domestic solar installation will be 16p per kilowatt hour, down from 21p, and will be set to decrease on a 3 month basis thereafter, with pauses if the market slows down. All tariffs will continue to be index-linked in line with the Retail Price Index (RPI) and the export tariff will be increased from 3.2p to 4.5p." DECC press release